628552704 has 88 divisors (see below), whose sum is σ = 1804307680. Its totient is φ = 193388544.

The previous prime is 628552693. The next prime is 628552709. The reversal of 628552704 is 407255826.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628552709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32067 + ... + 47805.

Almost surely, 2^628552704 is an apocalyptic number.

628552704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628552704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (902153840).

628552704 is an abundant number, since it is smaller than the sum of its proper divisors (1175754976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628552704 is a wasteful number, since it uses less digits than its factorization.

628552704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15775 (or 15757 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 628552704 is about 25070.9533923224. The cubic root of 628552704 is about 856.6049236758.

The spelling of 628552704 in words is "six hundred twenty-eight million, five hundred fifty-two thousand, seven hundred four".